Power oil removal unit



April 11, 1939. E. L. WOOD POWER OIL REMOVAL UNIT Filed Dec. 20, 1957 3Sheets-Sheet l INVENTOR I Qiood BY Z/ sdzmd TORNEY April 11, 1939. WOOD2,153,878

POWER OIL REMQVAL UNIT Filed Dec. 20, 1937 3 Sheets-Sheet 2 55 J i g 4jg INVENZ'OR I A 01mm April H, 193%. E. L. WOOD POWER OIL REMOVAL UNITFiled Dec. 20, 1937 3 Shets-Sheet 3 INVENTOR By zhzm kdflglbod A T ORNEYPatented Apr. 11, 1939 UNITED STATES PATENT OFFICE 20 Claims.

This invention relates to power oil removal units adapted to remove oilfrom the crankcase of internal combustion engines of automobiles and thelike.

One object of this invention is to provide improved, novel, positive,inexpensive means for quickly removing oil from the crank case ofinternal combustion engines and the like with a vacuum created in an oilreceiver by suction from the intake manifold of the said engine whenrunning.

Another object of this invention is to provide a connector fixed withrespect to a motor vehicle having an air suction tube and an oil suctiontube therefrom connected to the intake manifold and extending to the lowpoint of the crankcase of the engine of the said vehicle respectively,the said connector being adapted to be hermetically engaged by oilreceiving means which applies suction from the'air suction tube to theoil suction tube and thereby causes oil to be withdrawn from the saidcrankcase into the said 011 receiving means.

Another object of the invention is to provide a power oil removal unitcomprising a connector permanently fixed with respect to a motor vehiclehaving an air suction tube and an oil suction tube therefrom connectedto the intake manifold and extending to the low point of the crankcaseof the engine of the said vehicle respectively, the said air suctiontube being normally closed at its unconnected end by a suitable valve,and oil receiving means adapted to be removably fixed in hermeticallysealed relationship to the said connector over the unconnected ends ofthe said suction tubes and simultaneously open the said valve at theunconnected end of the said air suction tube whereby to create, a vacuumin said oil receiving means for removing oil from the crankcase of saidengine thereinto.

Another object of this invention is to provide a power oil removal unitcomprising a connector permanently fixed with respect to a motor vehiclehaving an air suction tube and an oil suction tube therefrom connectedto the intake manifold and extending to the low point of the crankcaseof the engine of the said vehicle respectively, the said air suctiontube being normally closed at its unconnected end by a suitable valve,and oil receiving means adapted to be removably fixed in hermeticallysealed relationship to the said connector over the unconnected ends ofthe said suction tubes and simultaneously open the said valve at theunconnected end of the said air suction tube whereby to create a vacuumin said 011 receiving means for removing oil from the crankcase of thesaid engine thereinto, the said oil receiving means having a vacuumrelief aperture therethrough suitably located to admit of manual controlof the vacuum created therein.

Other objects of the invention will become apparent by reference to thefollowing detailed description taken in connection with the accompanyingdrawings, in which:

Fig. 1 is a view part in section and part in elevation showing theconnector of a power oil removal unit embodying the invention moun ed onand connected in operating relationship to an internal combustion enginewith the oil receiver of the said oil removal unit suspended from andremovably fixed to the said connector in hermetically sealedrelationship thereto.

Fig. 2 is an enlarged detailed fragmentary sectional view through theconnector of the power 011 removal unit showing an oil receiversuspended therefrom, removably. fixed in hermetically sealedrelationship thereto, and simultaneously holding open the air valvenormally closing the unconnected end of the air suction tube thereof.

Fig. 3 is a ew part in section and part in elevation taken 3n the line33 of Fig. 2.

Fig. 4 is a view similar to Fig. 3 showing a modified construction ofmeans for supporting the oil receiver over the unconnected ends of theoil and air suction tubes.

Fig. 5 is a horizontal sectional view taken on the line 5-5 of Fig. 4.

Fig. 6 is a fragmentary vertical sectional view taken on the line 66 ofFig. 4. I

Fig. 7 is a horizontal sectional view similar to Fig. 5 showing thenormal position of the spring which compensates for the resiliency andwear of the sealing ring of the connector.

Fig. 8 is an enlarged cross sectional view similar to Fig. 2 showing theconnector when not in use with a dust shield positioned thereover andprevented from rattling by the resilient sealing ring of the said oilreceiver.

Fig. 9 is a detailed fragmentary sectional view similar to Fig. 2showing the coupling of a sentinel type oil receiver to the connector ofthe power oil removal unit.

Fig. 10 is an enlarged sectional view taken on the line l0lll of Fig. 9showing a preferred means for the simultaneous chucking of the air andoil suction hoses from the sentinel type oil receiver to the means forcoupling the sentinel type oil receiver to the said connector.

Figxll is a view part in section and part in elevation showing a typicalembodiment of a sennumerals refer to like and corresponding partsthroughout the several views, the embodiment of the invention disclosedtherein comprises, a power oil removal unit composed of a connector lpermanently mounted by means of a suitable bracket I l on the block oran internal combustion engine l2. Although the connector of the poweroil removal unit is disclosed herein secured on the block of an internalcombustion engine it is contemplated that the connector may be mountedelsewhere if desired but fixed-with respect to the said engine or thebody of a, motor vehicle propelled thereby, The said connector III hasan air suction line l3 therefrom connected to a source of suction suchas the intake manifo d (not shown) of the said internal combustionengine 12. An oil suction line l4 from the connector l0 preferablyextends through the upper portion of the crankcase l5 of the saidinternal combustion engine l2 to the low point l6 thereof. The said oilsuction line I4 is preferably secured to and through the said crankcasel5 by such means as a split sleeve nut I! which squeezes the said oilsuction line l4 when the said nut is tightened into the said crankcaseI5. A s'plit spring lock washer I8 is preferably used between the headof the sleeve nut 11 and the crankcase l5 to prevent the said splitsleeve nut I! from becoming loosened by the vibration of the said internal combustion engine l2. An oil receiver I 9 having a suitable spentoil container 20 threaded thereto is adapted to be supported from andpositioned in hermetically sealed relationship to the said connectorover the unconnected ends of the said air suction line l3 and oilsuction line l4 as best indicated in Fig. l. A gasket 2| between theannular shoulder 22 of the said container and the oil receiver l9assures an airtight coupling therebetween.

The novel construction of the connector in and the oil receiver l9including the means for suspending the said oil receiver l9 intohermetically sealed relationship over the unconnected ends of the airsuction line l3 and the oil suction line I4 is shown in detail in Figs.2 and 3 while a modifled construction of the said suspending means isshown in Figs. 4 to 7 inclusive. Fig. 8 shows the connector l0 when notin use having a dust shield positioned in antirattle relationshipthereover;

The front of the connector [0 is preferably formed disk shaped with anannular lip 23 therearound disposed forwardly therefrom. The saidconnector [0 is provided with a generally vertically disposed rearwardprotuberance to accommodate air and oil suction connections ashereinafter described. A centrally disposed boss 24 at the extreme rearof the said connector is bored and threaded at 25 for receiving themachine screw 26 by means of which the said connector I0 is secured tothe bracket II. A suitable lock washer 21 interposed between the bracketl l and the head of themachine screw 26 prevents the said machine screwfrom loosening due to vibration of the lock of the internal combustionengine I 2. A pair of tabs 28 projecting from the said boss 24 fit intocomplementary apertures formed in the said bracket H and prevent thesaid connector Ill from rotating with respect to the said bracket l I. Amachine screw 23 and lock washer 30 is preferably used to secure thesaid bracket l i to the engine block l2, see Fig. 1.

A tubular projection 3| formed integral with the connector l0 andextending radially upward therefrom frictionally receives the airsuction tube l3 thereover whereby a permanent connection between theconnector l0 and a source of suction is accomplished. The vertical bore32 of the said tubular projection 3| extends downwardly from the top ofthe said connector l0 until its communicates with the horizontallydisposed bore 33 preferably located on the vertical axis of the saidconnector ID positioned above the center of the said connector l0 andextending rearwardly from the disk shaped face thereof, all asillustrated in Fig. 2. I

A suitable air valve 34 seated in the base of a thimble 35 threaded inthe horizontally disposed bore 33 is normally maintained in its closedposition by the compression spring 35. The stem of the said air valve 34is preferably shouldered as indicated in the drawings and has a plunger31 riveted on the end thereof, the said plunger 31 is cylindrical shapedof a smaller diameter than the inside diameter of the said thimble 35and has a plurality of radially outwardly disposed guides 38 integraltherewith and coextensive therealong which centers the said plunger 31within the said thimble 35. The compression spring 36 reacts against thebottom of the said thimble 35 and engages the inwardly disposed ends ofthe said guides 38 for constantly urging the air valve 34 into itsclosed position seated in the bottom of the said thimble 35.

A forwardly disposed tubular projection 39 formed integral with the saidconnector I0 preferably located on the vertical axis of the saidconnector in and spaced below the said air valve 34 serves as theunconnected end of the oil suction line H. The horizontal bore 40 of thesaid forwardly disposed tubular projection 39 extends inwardly from thefront 01. the said connector l0 until it communicates with a verticallydisposed bore 41 preferably located on the vertical axis of the saidconnector I0 extending from the bottom of the said onnector I 0 upwardlya sufii cient distance to communicate with the said horizontal bore 40.The bottom of the said vertically disposed bore 4| is suitably threadedat 42 to receive a flared tube fitting 43 onto which the flared end ofthe oil suction tube I4 is connected by means of a flared tube connectornut 44.

The bracket 1 i is preferably extended up the back and across the top ofthe said connector Ill and is formed into a vertically disposed supportH0 from which oil receiving means is removably suspended and positionedin hermetically sealed relationship over the unconnected ends of thesaid air and oil suction tubes l3 and I4 respectively. The said supportH0 extends above the top of the said connector l0 and is spaced forwardof the vertically disposed tubular pro- J'ection 3| thereof. Thehorizontally disposed portion of the said bracket II which extendsacross the top of the said connector in is preferably provided with anaperture 45 through which the said vertically disposed tubularprojection 3! of the said connector I0 is telescoped as best illustratedin Fig. 2. Although the support H0 is disclosed herein integral with thebracket I I, the said support I I0 may be formed integral with the saidconnector ill or it may be of a separate piece of material suitablysecured to the said connector l0.

The said support H0 is suitably horizontally grooved near the topthereof to provide a pair of spaced vertically disposed tabs 46 adaptedto serve as guides for accurately positioning oil receiving means intohermetically sealed relationship against the said connector Ill over theunconnected ends of the air suction line l3 and the oil suction line l4as hereinafter described.

An annular sealing ring 41 of rubber or other suitable material issuitably secured or positioned against the front of the said connectorl0 radially within the forwardly disposed annular lip 23 therearound.

The oil receiver I9 is preferably formed elbow shaped as bestillustrated in Fig. 1 and has the lower bell shaped depending end 48thereof internally threaded to permit the same to be secured inhermetically sealed relationship to the complementarily threaded neck 49of the container 20. The throat of the oil receiver I8 is preferablyprovided with a plurality of external longitudinally disposedcircumferentially spaced ribs 50 as indicated in Figs. 1 and 3 to aid incooling the exterior surface thereof which often becomes heated from hotoil passing therethrough.

The laterally disposed open annular end of the said oil receiver I9 isof such a diameter as will permit the same to register with the sealingring 41 of the said connector l0 and is preferably provided with anannular groove 5| to assure a hermetically sealed joint between the saidoil receiver I9 and the connector II] when positioned thereagainst.

The said oil receiver I9 is preferably provided with a ridge 52 disposedinwardly of the annuiarly grooved laterally disposed open end thereofsufliciently close to the said laterally disposed open end of the oilreceiver is to cause oil drawn by suction from the bore 40 of the saidtubular proiection 39 which serves as the unconnected end of the oilsuction line l4 to spew or drip down the throat of the said connector l9thereby preventing an accumulation of oil in the end of the oil receiverl9 adjacent to the annular sealing ring 41 of the said connector Illwhen the oil removal unit is in use.

The said oil receiver I9 is preferably provided with a hooked shapedstrap hanger 53 on the outside of the top thereof and an air valvecontactor 54 on the inside of the top thereof both of which arepreferably secured to the said oil receiver by such means as the throughrivets 55 as best illustrated in Fig. 2. The said hooked shaped straphanger 53 is so formed as to engage the said oil receiver support H0vertically disposed on top of the said connector in between the spacedvertically disposed tabs 46 of the said support H0 as indicated by thedot and dash lines in Fig. 1 when the oil receiving means is beingpositioned in operating relationship with the said connector Ill. Thesaid oil receiver I 9 is accurately guided by the cooperation of thesaid hooked shaped strap hanger 53 with the said support H0 intohermetically sealed relationship with the connector ID with thelaterally disposed annular grooved open end of the said oil receivingmeans IS in sealed engagement against the annular sealing ring 41 of thesaid connector I0 as indicated by the full lines in Fig. 1 and as shownin detail in Fig. 2, at which time the said air valve contactor 54 ofthe said 011 receiving means 19 has contacted the air valve 34 of thesaid connector l0 and has opened the same as indicated in Fig. 2.

The said oil receiver I9 is preferably provided with a suitably disposedvacuum relief aperture 56 therethrough which prevents a vacuum frombeing built. up in the oil receiver l9 and its container 20 unless thesaid vacuum relief aperture is plugged up by the finger or thumb of theoperator of the power oil removal unit.

Although the connector III has been shown and described with theunconnected end of the air suction line H and the unconnected end of theoil suction line [4 horizontally disposed, it is readily observed that,if the connector III is mounted or constructed so that the unconnectedends of the air suction line l3 and the oil suction line l4 areotherwise disposed and if the unconnected end of the oil suction line His not positioned so that oil spewing therefrom will enter theunconnected end of the air suction line l3, the device will operateperfectly requiring but a simple change in the shape of the oil receiverHi to accommodate it to any altered disposition or location of theunconnected ends of the air suction line l3 and the oil suction line l4or to any rearrangement of the construction of the connector l0 per se.In rearranging the construction of the connector I! and correspondinglychanging the shape of the oil receiver l9 any suitable means may be usedfor removably fixing the oil receiving means in hermetically sealedrelationship to the said connector l0 and over the unconnected ends ofthe said air suction tube l3 and oil suction tube l4.

The outer periphery of the forwardly disposed annular lip 23 of the saidconnector Ill is provided with diametrically opposite preferablycylindrical tabs 51 by means of which a cup shaped dust shield 58provided with suitable diametrically oppositely disposed bayonet slotsis removably secured over the front of the said connector III as bestillustrated in Fig. 8. It will be noted that the shape of said cupshaped dust shield 58 is such as will engage the outwardly disposedannular face of the said annular sealing ring 41 and slightly compressthe same whereupon the said sealing ring 41 constantly urges the saiddust shield 58 in tensional relationship to the said tabs 51 whereby thesaid dust shield 58 is prevented from rattling when the connector I0 isvibrated by the engine l2.

Referring now to Figs. 4 to 7 inclusive, the modified construction ofmeans for supporting the oil receiver l9 over the unconnected ends ofthe oil and air suction tubes l3 and I4 respectively shown thereincompensates for the resiliency and any wear of the sealing ring 41 ofthe connector l0 and thereby assures a perfect hermetic seal at alltimes between the annularly grooved end 5| of the oil receiver l9 andthe annular sealing ring 41 of the said connector I I). The verticallydisposed support H00 is identical in every respect to the verticallydisposed support 0 shown in Figs. 2 and 3 except that it is not formedintegral with the bracket II but is secured to the top of the connectorill by such suitable means as the machine screws 59. The hooked shapedstrap hanger 530 is similar to the hook shaped strap hanger 53 disclosedin Fig. 2 except that it is provided with a horizontally disposedportion 53l adapted to slide over the grooved top of the said support Il 00 between the spaced vertically disposed tabs 46 thereof. The saidsupport H00 is provided with a pair of vertically oppositely diagonallydisposed slots 60 wh ch accommodate a bow-type spring 6| as bestillustrated in Fig. 7. The said bow-type spring 6l is suitably crimpedat its extreme ends 62 for retaining the same positioned in the saidslot 60 of the support H00.

When the oil receiver l9 equipped with a hooked shaped strap hanger 530having a horizontally disposed portion 53| as hereinbefore described isengaged over the said support illlli, the vertically disposed hookedportion 532 of the said hooked shaped strap hanger 530 engages thebow-type spring 5| of the said support Hill which spring 6| permits thesaid oil receiver I! to be suspended from the said support H" at asuitable place along the horizontally disposed portion 5H of the saidhook shaped strap hanger 530 in accordance with the resiliency and wearof the annular sealing ring 41 thereby causing the annularly groovedface 5| of the said oil receiver I! to engage the said annular sealingring 41 of the said connector l. with substantially equal horizontalpressure therearound. Construction not shown in the fragmentary Figs. 4to '7 inclusive is preferably similar in every respect to theconstruction shown in detail in Figs. 2 and 3.

The embodiment of the power oil removal unit disclosed in Figs. 9 to 11inclusive is similar to the embodiment of the power oil removal unitdisclosed in Figs. 1,2, 3 and 8 except that a sentinel type oil receiver53 is used instead of the portable oil receiver I! and that anunderground spent oil container or tank 64 is substituted for the oilcontainer 20. The said sentinel type oil receiver 63 has an air suctionhose 85 and an oil suction hose 56 extending therefrom to a suitablecoupler 61 which is adapted to engage the connector I in such a manneras to apply suction from the air suction tube to the oil suction tubeand cause oil to be withdrawn from the oil suction tube into the saidsentinel type oil receiver 63.

A suitable valve 58 is provided in the drain line 59 between the saidsentinel type oil receiver 63 and the underground spent oil container 54to permit the sentinel type oil removal unit to operate without thenecessity of building up a vacuum in the underground spent oil container64 when the said valve 68 is closed. By closing. off the undergroundspent oil container 64 from the sentinel type oil receiver 53 when theoil removal unit is in use, a considerable time is saved in applyingsuction from the air suction line Hi to the oil suction line i 4 andcreating a vacuum in the said oil receiver 53 for causing oil to hewithdrawn from the crankcase of an internal combustion engine into thesaid sentinel type oil receiver 63. After the sentinel type oil receiver63 is filled with spent oil from the crankcase of an internal combustionengine, the said sentinel type oil receiver 53 may be emptied by openingthe said valve 68 in the said drain line 59 whereupon oil from thesentinel type oil receiver 63 drains through the said drain line 59 intothe underground spent oil container 64.

It is therefore observed that the operation of the sentinel type oilremoval unit disclosed in Figs. 9 to 11 inclusive is precisely the sameas the operation of the portable type oil removal unit disclosed inFigs. 1, 2, 3 and 8 except that a spent oil container 64 of the sentineltype oil receiver 53 may be temporarily disconnected or sealed off fromthe said sentinel type oil receiver 53 while the sentinel type oilremoval unit is in use whereas no means is provided for disconnectingthe container 2! of the. portable oil receiver i9 disclosed in Fig. 1while the portable oil removal unit is in use.

The connector ll disclosed in Fig. 9 is similar in every respect to theconnector ||i disclosed in Figs. 2, 3 and 8 and hereinbefore describedin detail.

The coupler 61 shown in detail in Fig. 9 is 10 thereof a sufllcientdistance to permit the said oil hose sleeve 12 to be in alignment withthe unconnected end 39 of the oil suction line H of the connector |0when the said coupler 61 is properly positioned against the saidconnector A suitable washer and guide 13 is positioned in the cup 14integrally formed inthe said coupler 61 at one end of the said oilsuction hose sleeve 12 for assuring an oil tight connection between theoil suction hose sleeve 12 and the unconnected end of the oil suctionline H of the connector l0 when the said coupler 51 is positioned inhermetically sealed relationship against the said connector Ill.

The oil suction hose 65 is preferably frictionally engaged over the endof the said oil suction hose sleeve 12 opposite the cupped end thereofin telescopingly spaced relationship within the said air suction hosesleeve 1| as best illustrated in Fig. 9. The air suction hose 65 whichhas an in side diameter considerably larger than the outside diameter ofthe oil suction hose 58 and through which the said oil suction hose 66is telescoped, is preferably frictionally engaged and secured over theair suction hose sleeve 1| as hereinafter described.

The said air suction hose 65 is preferably clamped to the said airsuction hose sleeve 1| by means of tapered semi-crescent shaped wedges15 over which a complementarily tapered ring 15 is drawn by threadingthe said tapered ring 16 onto the threaded end 11 of the said coupler51. Pliable gaskets 18 and 19 provide means for hermetically sealing thejoints between the wedges 15, and between the wedges 15 and the taperedring 16, respectively. A key 8|] preferably integral with the saidcoupler 81 positioned on the vertical axis thereof prevents the saidsemi-crescent shaped tapered wedges 15 from rotating within the saidcomplementarily tapered ring 15 when the said wedges are being tightenedagainst or loosened from the air suction hose 65 and the air suctionhose sleeve 1|.

A short length of spring wire hose guard 8| is preferably telescopedover the air suction hose G5 and securely clamped thereto by a suitableclamp 82 positioned around the projecting end of the said air suctionhose sleeve 1| as best illustrated in Fig. 9. The said spring wire hoseguard 8| prevents the air suction hose 65 from kinking at the end of thecoupler 61. A suitable air passage aperture 83 is provided through theair suction hose sleeve 1| as indicated in Fig. 9 to permit air to bedrawn from the air suction hose 65 through the airsuction line l3 whenthe coupler 51 is positioned in hermetically sealed relationship to theannular sealing ring 41 of the said connector Ill and when the air valve34 normally closing the unconnected end of the said air suction line l3at the connector I0 is opened as hereinafter described.

The said coupler 51 is preferably provided with a hook shaped straphanger 84 on the outside of the top thereof and an air valve contactor85 on the inside of the top thereof both of which are secured to thesaid coupler 61 by such means as the through rivets 86 as bestillustrated in Fig. 9. The said hook shaped strap hanger 84 is so formedas to engage the said oil receiver support H9 vertically disposed on thetop of the said connector l9 between the spaced vertically disposed tabs46 of the said support IIII whenthe coupler 61 is being positioned inoperating relationship with the connector Ill. The said coupler 61 isaccurately guided by the cooperation of the said hook shaped straphanger 84 with the said support II9 into hermetically sealed.relationship with the connector I9 with the laterally disposed annulargrooved open end of the said coupler 61 in sealed engagement with theannular sealing ring 41 of the said connector I9, at which time the saidair valve contactor 85 of the said coupler 6'! has contacted the airvalve 34 of the said connector I9 and has opened the same as indicatedin Fig. 9.

Although not shown, the said coupler 61 may be provided with a suitablydisposed vacuum relief aperture therethrough similar to the vacuumrelief aperture 56 of the said oil receiver I9 for preventing a vacuumfrom being built up in the sentinel type oil receiver 63 unless the saidvacuum relief aperture is plugged up by the finger or thumb of theoperator of the power oil removal unit.

The sentinel type oil receiver 63 is preferably formed bottle shaped ofglass having a threaded upper neck 91 onto which the-air suction hose 65is hermetically connected by a suitably threaded cap 88 through whichthe said oil suction hose 66 centrally depends a short distance into thesaid oil receiver 63 in telescopingly spaced relationship thereto. Thesaid oil receiver 63 is preferably provided with a. tapered lower neck89 which is frictionally sealed within the funnel shaped connection 99disposed on the top of the drain line 69. A compressible tapered washer9| assures a hermetic seal between the said tapered lower neck 89 of thesaid oil receiver 63 and the said funnel shaped drain line connection99.

The said oil receiver 63 is preferably supported on a tubular metal post92 having a metal base 93 welded thereto, which base is in turn suitablysecured to a concrete curb 94. The top of the said tubular metal post 92is preferably provided with an annular dish shaped oil receiver support95 onto which the said oil receiver 63 is positioned with a suitableannular compressible dish shaped gasket 96 therebetween.

A suitable ornamental cap 91 preferably having a sign globe 98 thereonand having an annular dome shaped bottom 99 is positioned over the topof the said oil receiver 63 with a compressible annular dome shapedgasket I99 therebetween. The said cap 91 is preferably provided with asleeve I M at one side thereof through which the air suction hose 65enters. A short length of spring wire hose guard I92 adapted to preventthe said air suction hose 65 from kinkingat the said sleeve IN issecured around the said hose 65 and anchored to the said sleeve I9I bysuch means as an internally circumferentially scored anchorage sleeveI93 threaded over the said sleeve I9I of the said ornamental cap 91.

The said annular dome shaped bottom 99 of the said ornamental cap 91 isprovided with a plurality of circumferentially spaced radiallyprojecting vertically disposed anchorage lugs I94 having a verticallydisposed threaded bore in the bottom thereof to accommodate the threadedend of the anchorage rods I95. The said annular disk shaped oil receiversupport 95 is pro vided with a plurality of like circumferentiallyspaced vertically disposed radially projecting anchorage lugs I96 havinga vertically disposed threadedbore in the top thereof to accommodate thethreaded end of the said anchorage rods I95. The threads at the oppositeends of the said anchorage rods I95 are oppositely pitched and thethreads of the vertical bores of the anchorage lugs I94 and I96respectively are oppositely pitched so that when the said anchorage rodsI85 are threaded thereinto the said anchorage rods I95 will tensionallysecure the said sentinel type oil receiver 63 in assembled relationship.on

its pedestal 92 with the ornamental tap 91 thereover as best illustratedin Fig. 11.

The tubular metal post 92 of the said sentinel type oil receiver 63 ispreferably slotted at I91 through which the operating lever I98 of thevalve 68 of the drain line 69- projects. When the said drain valve leverI98 is in the upward position as indicated by the full lines in Fig. 11

the sentinel type oil removal unit is ready to operate without thenecessity of building a vacuum in the underground spent oil container64. After oil has been removed from the crankcase of an internalcombustion engine to the sentinel type oil receiver 63 and the said 011receiver 63 is filled with spent oil, the valve 68 in the drain line 69between the oil receiver 63 and the underground spent oil container 64is opened by moving the drain valvelever I98 to the position indica'tedby the dotted lines in Fig. 11 whereupon thesaid oil receiver 63 isemptied by gravity into the underground spent oil container 64.

It is readily observed from the foregoing description and theaccompanying drawings that when a motor vehicle is equipped with aconnector I9 embodying the invention, the motorist may remove spent oilfrom the crankcase of the internal combustion engine of the said motorvehicle when the said engine is running by positioning the portable oilreceiver I9 having a spent oil container, 29 connected thereto over theunconnected ends of the said air suction line I3 and oil suction line I4as hereinbefore described, or, the motorist may drive into a gasolinestation equipped with a sentinel type oil receiver 63 and have 011removed from the crankcase of his engine while the engine is running byconnecting the said sentinel type oil receiver 63 over the unconnectedends of the air suction line I3 and the oil suction line I4 of theconnector l9 by means of the coupler 61. as hereinbefore described. Ineither event, oil is removed from the crankcase of the internalcombustion engine of the said vehicle with a vacuum created in an .oilreceiver by suction from the intake manifold of the said engine of thesaid vehicle when running.

Although but two embodiments of the invention and one modificationthereof have been disclosed and described in detail, it will beunderstood that various changes including the size, shape, arrangementand details of the various parts thereof may be made without departingfrom the spirit of the invention, and it is not my intention to limitthe scope of the invention other than by the terms of the appendedclaims.

I claim:

1. In combination with a motor vehicle, a connector mounted on saidmotor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point of the crankcase of the said engine, the unconnectedends of the said suction tubes being mounted on the said connector, thesaid connector being adapted to support and position means for applyingsuction from the said air suction tube to the said oil suction tube inhermetically sealed relationship over the unconnected ends of saidsuction tubes whereby oil is removed from the crankcase of the saidengine into an oil receiver.

2. In combination with a motor vehicle, a connector mounted on saidmotor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point of the crankcase of the said engine, the unconnectedends of the said suction tubes being mounted on the said connector, andan oil receiver adapted to be removably fixed in hermetically sealedrelationship over the said unconnected ends of the said suction tubeswhereby to apply suction from, the air suction tube to the oil suctiontube which removes oil from the crankcase of the said engine into thesaid oil receiver.

3. In combination with a motor vehicle, a connector mounted on saidmotor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point of the crankcase of the said engine, the unconnectedends of the said suction tubes being mounted on the said connector, andsupporting means fixed with respect to the said connector from which oilreceiving means may be removably suspended and positioned inhermetically sealed relationship over the unconnected ends of the saidsuction tubes whereby suction is applied from the air suction tube tothe oil suction tube which removes oil from the crankcase of the saidengine into the said oil receiver.

4. In combination with a motor vehicle, a connector mounted on saidmotor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point of the crankcase of the said engine, the unconnectedends of the said suction tubes bein mounted on the said connector, asupport for oil receiving means on said connector, a sealing ring. onsaid connector, and oil receiving means adapted to be suspended fromsaid support in hermetically sealed relationship against said sealingring and apply suction from the said air suction tube to the said oilsuction tube whereupon oil is removed from the crankcase of the saidengine into the said oil receiving means. I

5. In combination with a motor vehicle, a connector mounted on saidmotor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point or the crankcase oi the said engine, the unconnectedends of the said suction tubes being mounted on the said connector, asupport for oil receiving means on said connector, a sealing ring onsaid connector positioned around the uncon-- nected ends of said suctiontube, an oil receiver, and means on said oil receiver adapted tocooperate with said oil receiver support to accurately suspend said oilreceiver in hermetically sealed relationship over the unconnected endsof said suctiontubes against said sealing ring whereupon oil is removedfrom the crankcase oi the said engine into the said oil receiver,

6. In combination with a motor vehicle, a connector mounted on saidmotor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point of the crankcase of the said engine, the unconnectedends of the said suction tubes being mounted on the said connector, asealing ring on said' connector positioned around the unconnected endsof the said suction tubes, oil receiving means, and means for accuratelysuspending said oil receiving means in hermetically sealed relationshipover the unconnected ends of said suction tubes and against said sealingring on said connector comprising a support having a pair of spacedguides integral therewith on said connector and a hangar secured to saidoil receiving means formed to engage said support between said guides.

7. In combination with a motor vehicle, a connector mounted on saidmotor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point of the crankcase of the said engine, the unconnectedends of the said suction tubes being mounted on the said connector, asealing ring on said connector positioned around the unconnected ends ofthe said suction tubes, oil receiving means, and means for accuratelysuspending said oil receiving means in hermetically sealed relationshipover the unconnected ends of said suction tubes and against said sealingring on said connector comprising a support having a pair of spacedguides integral therewith on said connector and a hangar secured to saidoil receiving means formed to engage said support between said guides,the said suspending means being adapted to compensate for resiliency andwear of the said sealing ring.

8. In combination with a motor vehicle, a connector mounted on saidmotor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point of the crankcase of the said engine, the unconnectedends of the said suction tubes being mounted on the said connector, asealing ring on said connector positioned around the unconnected ends ofthe said suction tubes, oil receiving means, and means for accuratelysuspending said oil receiving means in hermetically sealed relationshipover the unconnected ends of said suction tubes and against said sealingring on said connector comprising a support having a pair of spacedguides integral therewith on said connector and a hangar secured to saidoil receiving means formed to engage said support between said guides.

9. In combination with a motor vehicle, a connector mounted on saidmotor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point or the crankcase of the said engine, the unconnectedends of the said suction tubes being mounted on the said connector, asealing ring on said connector positioned around the unconnected ends ofthe said suction tubes, oil receiving means, and means for accuratelysuspending said oil receiving means in hermetically sealed relationshipover the unconnected ends of said. suction tubes and against saidsealing ring on said connector comprising a support having a pair ofspaced guides integral therewith .on said connector and a hangar securedto said oil receiving .means formed to engage said support between saidguides, the said suspending means being adapted to compensate forresiliency and wear of the said sealing ring.

10 In combination with a motor vehicle, a connector mounted on saidmotor vehicle, an air suction tube connected to the intake manifold.

of the engine of the said motor vehicle, an oil suction tubecommunicating with the low point of the crankcase of the said engine,the unconnected ends of the said suction tubes being mounted on the saidconnector, an air valve normally closing the unconnected end of the saidair suction tube, and an oil receiver adapted to be removably fixed inhermetically sealed relationship over the said unconnected ends of thesaid suction tubes and hold the said air valve open whereby to applysuction from the air suction tube to the oil suction tube which removesoil from the crankcase of the said engine into the said oil receiver. 1v

11. In combination with a motor vehicle, a connector mounted on saidmotor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point of the crankcase of the said engine, the unconnectedends of the said suction tubes being mounted on the said connector, anair valve normally closing the unconnected end of the said air suctiontube, and supporting means fixed with respect to the said connector fromwhich oil receiving means is removably suspended and positioned inhermetically sealed relationship over the unconnected ends of the saidsuction tubes and against said air valve whereby the said air valve isopened and suction is applied from the air suction tube to the oilsuction tube which removes oil from the crankcase of the saidengine intothe said oil receiver.

12. In a power oil removal unit, in combination, a connector mounted ona motor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point of the crankcase of the said engine, the unconnectedends of the said suction tubes being mounted on the said connector, andan oil receiver adapted to be removably fixed in hermetically sealedrelationship over the said unconnected ends of the said suction tubeswhereby to apply suction from the air suction tube to the oil suctiontube which removes oil from the crankcase of the said engine into thesaid oil receiver, the said oil receiver having a vacuum relief aperturetherethrough which prevents a vacuum from being built up in said oilreceiver until the said aperture is plugged by the operator of the saidoil removal unit.

13. In a power oil removalunit, in combination, a connector mounted on amotor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point of the crankcase of the said engine, the unconnectedends of the said suction tubes being mounted on the said connector, asealing ring on said connector positioned around the unconnected ends ofthe said suction tubes, and oil re-' ceiving means including means foraccurately suspending said oil receiving means in hermetically sealedrelationship over the unconnected ends of said suction tubes and againstsaid sealing ring on said connector comprising a support having a pairof spaced guides integral therewith on said connector and a hangarsecured to said oil receiving means formed to engage said supportbetween said guides,'the said 011 receiver having a vacuum reliefaperture therethrough which prevents a vacuum from'being built up insaid oil receiver until the said aperture is plugged by the operator ofthe said oil removal unit.

14. In a power oil removal unit, in combination, a connector mounted .ona motor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point of the crankcase of the said engine, the unconnectedends of the .said suction tubes being mounted on the said connector, anair valve normally "closing the unconnected end of the said air suctiontube, and an oil receiver adapted to be removably fixed in hermeticallysealed relationship over the said unconnected ends of the said suctiontubes and hold the said air valve open whereby to apply suction from theair suction tube to the oil suction tube which remove oil from thecrankcase of the said engine into the said oil receiver, the said oilreceiver having a vacuum relief aperture therethrough which prevents a'vacuum from being built up in said oil receiver until the said apertureis plugged by the operator of the said oil removal unit.

15. In combination with a motor vehicle, a connector mounted on saidmotor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point of the crankcase of the said engine, the unconnected.ends of the said suction tubes being mounted on the said connector, asupport for coupling means on said connector, a sealing ring on saidconnector, an oil receiver, an air suction hose and an oil suction hosehermetically connected at one end to the up r end of said oil receiver,and a coupling means on the free ends of said air and oil suction hosesadapted to be suspended from said connector and couple the said air andoil suction hoses to said connector in hermetically sealed relationshipagainst said sealing ring and the unconnected end of said oil suctiontube whereby suction is applied from the air suction tube to the oilsuction tube whereupon oil is removed from the crankcase of the saidengine into the said oil receiver.

16. In combination with a motor vehicle, a connector mounted on saidmotor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point of the crankcase of the said engine, the unconnectedends of the said suction tubes being mounted on the said connector, anair valve normally closing the. unconnected end of said air suctiontube, a support for coupling means on said connector, a sealing ring onsaid connector, an oil receiver, an air suction hose and an oil suctionhose hermetically connected at one end to the upper end of said oilreceiver, and a coupling means on the free ends of said air and oilsuction hoses adapted to be suspended from said connector andsimultaneously open said air valve and couple the said air and oilsuction hoses to said connector in hermetically sealed relationshipagainst the said sealing ring and the unconnected end of said oilsuction tube whereby suction is applied from the air suction tube to theoil suction tube whereupon oil is removed from the crankcase of the saidengine into the said oil receiver.

17. In combination with a motor vehicle, a connector mounted on saidmotor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point of the crankcase of the said engine, the unconnectedends of the said suction tubes being mounted on the said connector, 9.support for coupling means on said connector, a sealing ring on saidconnector, an oil receiver, an air suction hose connected at one end tothe upper end of said oil receiver, an oil suction hose having itsoutside diameter smaller than the inside diameter 01' said air suctionhose telescoped therein and extending into said 011 receiver, and acoupling means on the free ends of said air and oil suction hosesadapted to be suspended from said connector and couple the said air andoil suction hoses to said connector in hermetically sealed relationshipagainst said sealing ring and the unconnected end of said 011 suctiontube whereby suction is applied from the air suction tube to the oilsuction tube whereupon oil is removed from the crankcase of the saidengine into the said oil receiver,

18. A power oil removal unit, in combination, a connector mounted on amotor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point of the crankcase of the said engine, the unconnectedends of the said suction tubes being mounted on the said connector, an.air valve normally closing the unconnected end of said air suction tube,a support for coupling means on said connector, a sealing ring on saidconnector, an oil receiver, an air suction hose connected at one end tothe upper end of said oil receiver, an oil suction hose having itsoutside diameter smaller than the inside diameter of said air suctionhose telescoped therein and extending into said oil receiver, and acoupling means on the free ends of said air and oil suction hosesadapted to be suspended from said connector and simultaneously open saidair valve and couple the said air and oil suction hoses to saidconnector in hermetically sealed relationship against said sealing ringand the unconnected end of said oil suction tube whereby suction isapplied from the air suction tube to the oil suction tube whereupon oilis removed from the crankcase of the said en gine into the said oilreceiver.

19. A power oil removal unit, in combination, a connector mounted on amotor vehicle, an air suction tube connected to the intake mani fold ofthe engine of the saidmotor vehicle, an

amaa'ra oil suction tube communicating with the low point of thecrankcase of the said engine, the unconnected ends of the said suctiontubes being mounted on the said connector, an air valve normally closingthe unconnected end of said air suction tube, a support for couplingmeans on said connector, a sealing ring on said connector, an oilreceiver, an air suction hose connected at one end to the upper end ofsaid oil receiver, an oil suction hose having its outside diametersmaller than the inside diameter of said air suction hose telescopedtherein and extending into said oil receiver, and a coupling means onthe free'ends of said air and oil suction hoses adapted to be suspendedfrom said connector and simultaneously open said air valve and couplethe said air and oil suction hoses to said connector in hermeticallysealed relationship against said sealing ring and the unconnected end ofthe said oil suction tube whereby suction is applied from the airsuction tube to the oil suction tube whereupon oil is removed from thecrankcase of the said engine into the said oil receiver, the saidcoupling means and support therefor being adapted to compensate forresiliency and wear of the said sealing ring.

20. A power oil removal unit, in combination, a connector mounted on amotor vehicle, an air suction tube connected to the intake manifold ofthe engine of the said motor vehicle, an oil suction tube communicatingwith the low point of the crankcase of the said engine, the unconnectedends of the said suction tubes being mounted on the said connector, anair valve normally closing the unconnected end of said air suction tube,a support for coupling means on said connector, a sealing ring on saidconnector, a sentinel type oil receiver, an air suction hose connectedat one end to the upper end of said oil receiver, an oil suction hosehaving its outside diameter smaller than the inside diameter of said airsuction hose telescoped therein and extending into said oil receiver,and a coupling means on the free ends of said air and oil suction hosesadapted to be suspended irom said connector and simultaneously open saidair valve and couple the said air and oil suction hoses to saidconnector in hermetically sealed relationship against said sealing ringand the unconnected end of the said oil suction tube whereby suction isapplied from the air suction tube to the oil suction tube whereupon oilis removed from the crankcase of the said engine into the said oilreceiver, the said coupling means and support therefor being adapted tocompensate for resiliency and wear of the said sealing ring,

EDWARD L. WOOD.

